*{margin: 0;padding: 0;font-family:"黑体"; font-weight:normal;}
#container {
    position: absolute;
    height: 100%;
    width: 100%;
}
#output {
    width: 100%;
    height: 100%;
}
.color{
    width: 120px;
    height: 20px;
    margin: 0 auto;
    position: fixed;
    left: 50%;
    margin-left: -60px;
    bottom: 60px;
}
.color li{
    float: left;
    margin: 0 5px;
    width: 20px;
    height: 20px;
    background: #ccc;
    box-shadow: 0 0 4px #FFF;
    list-style: none;
    cursor: pointer;
}
.color li:nth-child(1){
    background: #002c4a;
}
.color li:nth-child(2){
    background: #35ac03;
}
.color li:nth-child(3){
    background: #ac0908;
}
.color li:nth-child(4){
    background: #18bbff;
}